Low Frequency Pure Sine Wave Inverter

EP3000 Pro Series (1-6KW)


  • Rated power 1kw to 6kw
  • Pure sine wave output
  • 3 times surge power
  • Wide frequency 40Hz-80Hz
  • Overload and short circuit protection
  • Built-in pure copper UI transformer
  • Smart battery charger designed for optimized battery performance
  • Cold start function
  • Support RS232 monitoring function with free CD
  • Support BTS and AGS function
  • DIP Switch offer customized performance
  • Remote Control Panel (optional)
  • Compatible to generator

Three Colors Option:




Inverter Battery Cable(Optional):

DC Wiring recommendation

It is suggested the battery bank be kept as close as possinle to the inverter. The following cable is a suggested wiring option for 1 meter DC cable.

Please find the following minimum wire size. In case of DC cable longer than 1m, please increase the cross section of cable to reduce the loss.

Model Battery Voltage Wire gage/Min Model Battery Voltage Wire gage/Min
0-1.0m 0-1.0m
1KW 12VDC 1*6AWG 2KW 12VDC 1*2AWG
24VDC 1*6AWG 24VDC 1*4AWG
1.5KW 12VDC 1*4AWG 48VDC 1*6AWG
24VDC 1*6AWG 4KW 24VDC 4*2AWG
3KW 12VDC 1*2AWG 48VDC 1*4AWG
24VDC 1*3AWG 6KW 24VDC 1*2AWG
48VDC 1*6AWG 48VDC 1*3AWG
5KW 24VDC 1*2AWG      
48VDC 1*3AWG      

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Smart Battery Chargers

Smart battery charger design for optimized battery performance.


Battery Protection

Low voltage, overload, and high voltage, over temperature protection.


Pure Sine Wave

Pure sine wave output.


LCD/LED Display Information

1. Switch Power saver auto: Power on with saver mode(power saver ≤ 25W)
Unit Off: Power totally off(If there is AC power,inverter have charger function)
Power saver off: Power on without saver mode

2. AC Charge Indicator
3. AC power Indicator
4. Inverter Indicator
5. Charge current adjustable:25%,50%,75%,100%.(Optional)
6. Check inverter

Figure 1 Back Panel Information

1. Battery input
2. RS232 communication port
6. AGS
7. BTS
8. DIP Switch (SW1-SW5)
DIP Switches
On the rear panel of inverter, there are 5 DIP switches which enable users to customize the performance of the device.
Table 2.5.11 dip switch function setting(For more details information,please check in the user manual.)

DIP switch NO. Switch function Position:1 Position :0
SW1 Low battery trip volt 10.5VDC 11.0VDC
*2 for 24VDC, *4 for 48VDC
SW2 AC input range/(AVR) 120VAC 75-140VAC 95-140VAC
230VAC 145-272VAC 185-272VAC
SW3 Power saver auto setting Detect load per 5secs Detect load per 30secs
SW4 O/P frquency setting 50Hz 60Hz
SW5 Solar/AC priority setting Utility priority Solar priority

9. Remote control

RS232 Computer Monitoring Page


Optional BTS Function-Battery Temperature Sensor

Variances in charging voltage & S.D. Voltage base on the battery temperature

Remote Control Panel (Optional)

EP3000 PRO 4KW-6KW model update with “UI type”transformer

Efficiency is more higher and with lower self-consumption


Figure 2 Back Panel Information

3. Charger Input Protect
4. Inverter Output Protect
5. Output 10A MAX
10. AC Input/AC Output

Other Features

EP3000 Pro series is very economical pure sine wave inverter , and AC charger from 35A to 70A .Solar /AC priority configurable . When solar priority , in case its charge current lower than inverter’s charger from AC , AC will supplement to charge the batteries ,to optimize charging. With low frequency transformer ,it enable the inverter to operate with all kinds of home appliances.

Inverter Connection





Default Battery System Voltage 12VDC 24VDC 12VDC 24VDC 12VDC 24VDC 12VDC 24VDC 48VDC 24VDC 48VDC 24VDC 48VDC 24VDC 48VDC
Reted Power 1.0KW 1.5KW 2KW 3KW 4KW 5KW 6KW
Surge Rating (20ms) 3.0KVA 4.5KVA 6.0KVA 9.0KVA 12KVA 15KVA 18KVA
Capable Of Starting Electric Motor 1HP 1HP 1HP 2HP 3HP
Waveform Pure sine wave/ same as input (bypass mode)
Nominal Output Voltage RMS 100V/110V/120VAC  220V/230V/240VAC(±10% RMS) 220V/230V/240VAC(±10% RMS)
Output Frequency 5OHz/60Hz±0.3 Hz
Inverter Efficiency(Peak) >88%
Line Mode Efficiency >95%
Power Factor 1.0
Typical Transfer Time 10ms(max) 10ms(max)
Voltage 230VAC
Selectable Voltage Range 96~132VAC  155~280VAC(For Personal Computers)  
Frequency Range 50Hz/60Hz (Auto sensing) 40~80Hz
Minimum Start Voltage 10.0VDC /10.5VDC for12VDC mode (*2 for 24VDC, )
Low Battery Alarm 10.5VDC±0.3V for12VDC mode (*2 for 24VDC, )
Low Battery Cutoff 10.0VDC±0.3V for12VDC mode (*2 for 24VDC, )
High Voltage Alarm 16.0VDC±0.3V for12VDC mode (*2 for 24VDC, )
High Battery Voltage Recover 15.5VDC±0.3V for12VDC mode (*2 for 24VDC, )
Idle Consumption-Search Mode <25W when power saver on
Output Voltage Depends on battery tvpe
Charger AC Input Breaker Rrating 10A 30A 30A 30A 40A
Overcharge Protection S.D. 15.7VDC for 12VDC mode (*2 for 24VDC mode)
Maximum Charge Current 35A 20A 45A 25A 65A 35A 75A 45A 30A 65A 35A 70A 40A 75A 50A
Input Voltage Waveform Sine wave (grid or generator)
Nominal Input Frequency 50Hz or 60Hz
Overload Protection (SMPS Load) Circuit breaker
Output Short Circuit Protection Circuit breaker
Bypass Breaker Rating 10A 30A 30A 30A   40A
Max Bypass Current 30Amp
Maximum PV Charge Current 50A
DC Voltage 12V/24V/48 
PWM Range @ Operating Voltage 15~80VDC
Maximum PV Array Open Circuit Voltage 90VDC
Maximum Efficiency >97%
Standby Power Consumption <2W
Mounting Wall mount
Dimensions (W*H*D) 426*206*178 mm 601*206*178
Net Weight (Solar CHG) kg 16.5 17 21.1 20 26 24.5 24.8 38.2 35.8 45.2 45 45.2 45
Shipping Dimensions(W*H*D) 570*335*300mm   750*335*300mm
Shipping Weight (Solar CHG) kg 19.3 20 24.1 22.8 29.1 27.5 27.5 42.3 40 49.5 49.3 49.5 49.3
Operation   Temperature  Range 0°C to 40°C
Storage   Temperature -15°C to 60°C
Audible   Noise 60dB MAX
Display LED+LCD
Standard Warranty 1 year

Approximate Back-up Time Table

Power Rate(w) backup time(H) @1*100Ah backup time(H) @2*100Ah backup time(H) @4*100Ah backup time(H) @4*200Ah backup time(H) @8*200Ah
1000 0.4806 1.602 3.50304 7.6896  
2000 0.2136 0.4806 1.602 3.50304 7.6896
3000 0.1068 0.2848 0.8544 2.136 4.8416
4000   0.2136 0.4806 1.602 3.50304
5000   0.12816 0.34176 1.19616 2.73408
6000   0.1068 0.2848 0.8544 2.136




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